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Contract OI history

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Dec 18, 2026 EXPIRATION

TMO $520.00 Put

TMO261218P00520000

Latest saved OI243Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TMO $520.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2431210 2026-10-02: 242 OI2026-10-05: 242 OI2026-10-06: 242 OI2026-10-07: 242 OI2026-10-08: 242 OI2026-10-09: 242 OI2026-10-13: 233 OI2026-10-14: 233 OI2026-10-15: 233 OI2026-10-16: 230 OI2026-10-21: 238 OI2026-10-23: 243 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

TMO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026243+5
Oct 21, 2026Viewing238+8
Oct 16, 2026230-3
Oct 15, 20262330
Oct 14, 20262330
Oct 13, 2026233-9
Oct 09, 20262420
Oct 08, 20262420
Oct 07, 20262420
Oct 06, 20262420
Oct 05, 20262420
Oct 02, 2026242No prior observation